I read both on Amazon and Ebay about these new incredible “military flashlights”, capable of impossible things like 30000 lumen, or even 30000W
I’d like to figure out what is actually happening on the market…
Apart from the silly 30000W statement, is it possible for a small flashlight to have 30000 lumen capability? I read about Cree and its super-powerful LEDs, but how can I distinguish which flashlights actually mount a superpowerful led? Which CREE led has more efficacy? There are just some HUNDREDS of variants on the site….
Can a single led in a flashlight provide 30000 lumen? Or maybe there are more leds per flashlight? All pictures show the flashlight from any angle…. but the one I need: a closeup on the led!
But even if 30000 lumen are real, it would mean 200-300W! How long can such a flashlight last on batteries?!? A couple of minutes? And will I have to drop it even just after a few seconds because it gets hot?
30000 lumen on commercial flashlight will become possible in next few years, i believe
About the led
Just remember some common number
Xp-g2 is about 600-1000 lumen
Xpl-hd/hi(1000-1500)
Xml2:similar to xpl-hd
Xhp35:1300-2500 lumen
Xhp50 consist of 4 dies of xp-g2
Xhp70 consist of 4 dies of xpl-hd
(Just guessing, these number seem legit)
30000 lumen on commercial flashlight will become possible in next few years, i believe
About the led
Just remember some common number
Xp-g2 is about 600-1000 lumen
Xpl-hd/hi(1000-1500)
Xml2:similar to xpl-hd
Xhp35:1300-2500 lumen
Xhp50 consist of 4 dies of xp-g2
Xhp70 consist of 4 dies of xpl-hd
(Just guessing, these number seem legit)
The highest output for a single LED small flashlight, (from a maker likely to make truthful claims), which I’ve come across, is 2800 lumens from the Nitecore TM03. It can’t do it for long and needs a special 18650. Much bigger lights, such as the Convoy L6 with a couple of 26650s, can put out over 3,500 lumens for a time. Then there are multi-LED, multi-cell lights, which can do more, but that’s not what you are talking about, and they don’t come close to 30,000 lumens.
As for Amazon/ebay/ claims of thousands of lumens for what look like generic small Chinese flashlights, they are ludicrous. They write any number they think will impress people who don’t know anything about it. I don’t know where the armed forces get their flashlights from, but I bet they don’t buy them on ebay or Amazon.
AFAIK, Mrheosuper’s figures are right for the best commercially available LEDs, and I doubt LEDs coming out in the next few years will even double that. Then there are theoretical limits to LED efficacy.
A genuine 1,000 lumen small flashlight with a Cree XML-2/XPL is pretty impressive. The LED will be running at near the maker’s recommended limit. They can be pushed harder, but it’s rapidly diminishing returns; efficacy drops fast, heat problems increase fast etc.
Then as The Miller said, lots of these lights are advertised with a Cree LED, usually they say “XML T6”, but what they actually have is a Latticebright or similar, which is very blue and generally nowhere near as good.
“Total System Weight
Typical with installation, hardware, cable assemblies:
55-70 lbs (25-31 kg)”
…which does not include the power supply capable of providing 60A @ 28V.
To get your 30,000 lumens, you could build about a dozen ~3000-lumen Convoy S2 triples, with XP-L HI emitters, FET drivers, bypassed springs, and high-drain cells, then duct tape them all together into a big bundle… :disappointed:
On ebay for 10$: 2015 NEW Cree XHP50 XHP70 Cool White 6500K LED with 20mm Copper PCB 6V/12V 2015 NEW Cree XHP70 6500K N4-1A on 6V SinkPad-II 20mm Copper Base
Even cooler if it existed in 4x configuration like this! (16000-24000 lumen) Cree XPE 4Chip 6V/12V LED Emitter instead of MCE XML LED with 20MM Cooper PCB
Or maybe it does exist and it is mounted on REAL “military 30000 lumens flashlights”?
edit:
I found a “real” high power “military flashlight” mounting 3x XHP50…. but id does not cost 10$; it costs 200$!!! :money_mouth_face: New OLIGHT X7 MARAUDER 3x CREE XHP 70 9000 Lumens LED Flashlight ( 4x 18650 )
Didn’t Vinz or what’s his name (famous modder selling stuff via CPF) recently build a 30K lumens light with a whole lot of LEDs?
In the 1000-9999 lumens range of not trustworthy Chinese lights divede by 10 to 20 for accurate estimate
For cells, divide mAh by 5 to get an optimistic idea of actual mAh
So better check BLF what good lights and cells are
I have an idea that the lights the military buy are much the same as we can buy in terms of light performance, but they go for up market toughened versions. I can believe they’d buy things like Elzetta, which you can also buy on Amazon
I found a very interesting page on ebay! XLightFire 38000 Lumen 14x CREE XML T6 5 modalità Super Brillante torcia LED
From 20,00 $ to 30,00 $.
They offer 12 variants of the flashlight and they clearly show how many leds each one uses: from 4 to 14 Cree XML T6!
If I understand correctly, XML2 has a 1000-1500 LPW capability, so this would mean from 4000 to 21000 lumen. But I have not really clear the difference between XML2 and XML-T6.
Also this is interestin: CREE XHP35 XHP50 XHP70 6500K Cool White LED Emitter 6V 12V 16mm 20mm Cooper PCB
Looking at pictures it looks like XHP35 is a single chip, while XHP50 and XHP70 are 4x dies, but it sounds strange… Shouldn’t “XHP” refer to multiple dies assemblies?
Does this mean that I should pick the “base luminous flux” from page 3 (=1965 lm) and multiply by 1.9 to get luminous flux at 2400 mA? So at 12V/2400mA/29W would I get 3733 lumen? But I don’t get the 4022 lm stated in main page.
But is it something like “overclocking a CPU”? Is it not recommended or what?
Just a thing to keep in mind. I see some people highly disappointed with their turbo flashlights, “only 1 minute runtime”. I mean that do you expect there is no juice in the cells to run those massive current for longer than that.
So if you want 4000lm from a single 26650 expect 30sec runtime and that is it. Then drops to very low lumen levels.
Actually I’m not interested on flashlights but on LEDs powering them, to install them inside spotlights powered by mains.
I’m now trying to figure out what it’s better for me: purchasing a flashlight and connecting it to mains through an external driver, or extracting LEDs from it, or extracting the whole section with LEDs+driver, or just purchasing the single LEDs now that I’ve figured out that they actually exist and they give that huge amount of light.
I already purchased one of those “10000 lumen spotlight” on ebay… just to have a good heatsink (20x20cm alluminum) and a container Indeed, the 2x50W LEDs in it are powered each by a 30V/600mA driver (!!!), so the spotlight is far from giving the stated 10000 lumen! (it barely has 1000 lumen I guess, but it was expected…).
I’m now trying to figure out if it’s just a matter of lack of current, or if the LEDs are actually not capable of that much light: they’re COBs around 40x40 mm each, labeled “10c10b”, which (now I know…) means 10s10p LED matrix. Now that I know Cree LEDs, these ones look… ancient! A 40x40mm Cree chip XHP70-based (7x7mm) would give 100,000 lumen! (And it would draw 1 kW… And I could also use it as a water heater…).
I read that 100.000 lumen is the “light power” of the Sun!
So a single 1kW/40x40 Cree chip would provide as much light as the Sun!
The base data is at 85d Celsius junction temperature and a current below the max. rating of the LED.
Modern LEDs can pass 120dC junction temperature for >10000h
Keep in mind that the max rating of manufactor must include bad aluminum stars with bad thermal resistance of heatsink
With a good DTP star at max. current you can get the junction to about 60-70dC when the host has room temperature snd anout 85dC when the host warms up,
as the light and LED heats up the output drops, then 3733 is more reasonable as the 4022 with a junction temperature of 25dC, you get such a junction temperature only if the light is freezing cold like –20dC, or when the light is turned on for less than a second
